* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;

    -webkit-tap-highlight-color: transparent;
}
ul, ol {
    list-style: none;
}
a {
    text-decoration: none;
}
.fl {
    float: left;
}
.fr {
    float: right;
}
.clearfix::before,
.clearfix::after {
    content: " ";
    display: block;
    height: 0;
    line-height: 0;
    clear: both;
    visibility: hidden;
}
.clearfix {
    zoom: 1;
}